Update: I see that I'm not the only one to make the Radio Rwanda comparison. Spocko - the blogger who has been documenting the extremism of Morgan and her KSFO radio pals - noticed the liberals are cockroaches theme of Morgan back in last December. From an audio clip provided by Spocko of a KSFO broadcast

"A cockroach will live nine days without its head before it starves to death"

"That's nothing compared to liberals."

[Everyone yucks it up, Morgan can be heard laughing louder than anyone else.]

Again, this sounds vaguely familiar ...

"We began by saying that a cockroach cannot give birth to a butterfly. It is true. A cockroach gives birth to another cockroach […] The history of Rwanda show us clearly that a Tutsi stays always exactly the same that he has never changed. The malice, the evil are just as we knew them in the history of our country. We are not wrong in saying that a cockroach gives birth to another cockroach." - Hutu newspaper Kangura (March 1993)

Rush Limbaugh - who has a far larger audience than Morgan - has made the more sweeping statement that "liberals" are cockroaches (and in the next few sentences mentioned Carl Sagan as a "liberal") and Matt Margolis at Blogs for Bush has called Democrats "corrupt cockroaches."

I just googled and see that you already beat me to the radio rwanda comparison by half a year ... I'll add it into the post in a second...